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mysql5/mysql-5.7.27/storage/perfschema/table_events_transactions.cc

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/* Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
/**
@file storage/perfschema/table_events_transactions.cc
Table EVENTS_TRANSACTIONS_xxx (implementation).
*/
#include "my_global.h"
#include "my_thread.h"
#include "table_events_transactions.h"
#include "pfs_instr_class.h"
#include "pfs_instr.h"
#include "pfs_events_transactions.h"
#include "pfs_timer.h"
#include "table_helper.h"
#include "pfs_buffer_container.h"
#include "field.h"
#include "xa.h"
THR_LOCK table_events_transactions_current::m_table_lock;
static const TABLE_FIELD_TYPE field_types[]=
{
{
{ C_STRING_WITH_LEN("THREAD_ID") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("EVENT_ID") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("END_EVENT_ID") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("EVENT_NAME") },
{ C_STRING_WITH_LEN("varchar(128)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("STATE") },
{ C_STRING_WITH_LEN("enum(\'ACTIVE\',\'COMMITTED\',\'ROLLED BACK\'") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("TRX_ID") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("GTID") },
{ C_STRING_WITH_LEN("varchar(64)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("XID_FORMAT_ID") },
{ C_STRING_WITH_LEN("int(11)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("XID_GTRID") },
{ C_STRING_WITH_LEN("varchar(130)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("XID_BQUAL") },
{ C_STRING_WITH_LEN("varchar(130)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("XA_STATE") },
{ C_STRING_WITH_LEN("varchar(64)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("SOURCE") },
{ C_STRING_WITH_LEN("varchar(64)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("TIMER_START") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("TIMER_END") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("TIMER_WAIT") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("ACCESS_MODE") },
{ C_STRING_WITH_LEN("enum(\'READ ONLY\',\'READ WRITE\'") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("ISOLATION_LEVEL") },
{ C_STRING_WITH_LEN("varchar(64)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("AUTOCOMMIT") },
{ C_STRING_WITH_LEN("enum(\'YES\',\'NO\'") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("NUMBER_OF_SAVEPOINTS") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("NUMBER_OF_ROLLBACK_TO_SAVEPOINT") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("NUMBER_OF_RELEASE_SAVEPOINT") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("OBJECT_INSTANCE_BEGIN") },
{ C_STRING_WITH_LEN("bigint") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("NESTING_EVENT_ID") },
{ C_STRING_WITH_LEN("bigint(20)") },
{ NULL, 0}
},
{
{ C_STRING_WITH_LEN("NESTING_EVENT_TYPE") },
{ C_STRING_WITH_LEN("enum(\'TRANSACTION\',\'STATEMENT\',\'STAGE\',\'WAIT\'") },
{ NULL, 0}
}
};
TABLE_FIELD_DEF
table_events_transactions_current::m_field_def=
{24 , field_types };
PFS_engine_table_share
table_events_transactions_current::m_share=
{
{ C_STRING_WITH_LEN("events_transactions_current") },
&pfs_truncatable_acl,
table_events_transactions_current::create,
NULL, /* write_row */
table_events_transactions_current::delete_all_rows,
table_events_transactions_current::get_row_count,
sizeof(PFS_simple_index), /* ref length */
&m_table_lock,
&m_field_def,
false, /* checked */
false /* perpetual */
};
THR_LOCK table_events_transactions_history::m_table_lock;
PFS_engine_table_share
table_events_transactions_history::m_share=
{
{ C_STRING_WITH_LEN("events_transactions_history") },
&pfs_truncatable_acl,
table_events_transactions_history::create,
NULL, /* write_row */
table_events_transactions_history::delete_all_rows,
table_events_transactions_history::get_row_count,
sizeof(pos_events_transactions_history), /* ref length */
&m_table_lock,
&table_events_transactions_current::m_field_def,
false, /* checked */
false /* perpetual */
};
THR_LOCK table_events_transactions_history_long::m_table_lock;
PFS_engine_table_share
table_events_transactions_history_long::m_share=
{
{ C_STRING_WITH_LEN("events_transactions_history_long") },
&pfs_truncatable_acl,
table_events_transactions_history_long::create,
NULL, /* write_row */
table_events_transactions_history_long::delete_all_rows,
table_events_transactions_history_long::get_row_count,
sizeof(PFS_simple_index), /* ref length */
&m_table_lock,
&table_events_transactions_current::m_field_def,
false, /* checked */
false /* perpetual */
};
table_events_transactions_common::table_events_transactions_common
(const PFS_engine_table_share *share, void *pos)
: PFS_engine_table(share, pos),
m_row_exists(false)
{}
/**
Build a row.
@param transaction the transaction the cursor is reading
*/
void table_events_transactions_common::make_row(PFS_events_transactions *transaction)
{
ulonglong timer_end;
m_row_exists= false;
PFS_transaction_class *unsafe= (PFS_transaction_class*) transaction->m_class;
PFS_transaction_class *klass= sanitize_transaction_class(unsafe);
if (unlikely(klass == NULL))
return;
m_row.m_thread_internal_id= transaction->m_thread_internal_id;
m_row.m_event_id= transaction->m_event_id;
m_row.m_end_event_id= transaction->m_end_event_id;
m_row.m_nesting_event_id= transaction->m_nesting_event_id;
m_row.m_nesting_event_type= transaction->m_nesting_event_type;
if (m_row.m_end_event_id == 0)
{
timer_end= get_timer_raw_value(transaction_timer);
}
else
{
timer_end= transaction->m_timer_end;
}
m_normalizer->to_pico(transaction->m_timer_start, timer_end,
&m_row.m_timer_start, &m_row.m_timer_end, &m_row.m_timer_wait);
m_row.m_name= klass->m_name;
m_row.m_name_length= klass->m_name_length;
/* Disable source file and line to avoid stale __FILE__ pointers. */
m_row.m_source_length= 0;
/* A GTID consists of the SID (source id) and GNO (transaction number).
The SID is stored in transaction->m_sid and the GNO is stored in
transaction->m_gtid_spec.gno.
On a master, the GTID is assigned when the transaction commit.
On a slave, the GTID is assigned before the transaction starts.
If GTID_MODE = OFF, all transactions have the special GTID
'ANONYMOUS'.
Therefore, a transaction can be in three different states wrt GTIDs:
- Before the GTID has been assigned, the state is 'AUTOMATIC'.
On a master, this is the state until the transaction commits.
On a slave, this state does not appear.
- If GTID_MODE = ON, and a GTID is assigned, the GTID is a string
of the form 'UUID:NUMBER'.
- If GTID_MODE = OFF, and a GTID is assigned, the GTID is a string
of the form 'ANONYMOUS'.
The Gtid_specification contains the GNO, as well as a type code
that specifies which of the three modes is currently in effect.
Given a SID, it can generate the textual representation of the
GTID.
*/
rpl_sid *sid= &transaction->m_sid;
Gtid_specification *gtid_spec= &transaction->m_gtid_spec;
m_row.m_gtid_length= gtid_spec->to_string(sid, m_row.m_gtid);
m_row.m_xid= transaction->m_xid;
m_row.m_isolation_level= transaction->m_isolation_level;
m_row.m_read_only= transaction->m_read_only;
m_row.m_trxid= transaction->m_trxid;
m_row.m_state= transaction->m_state;
m_row.m_xa_state= transaction->m_xa_state;
m_row.m_xa= transaction->m_xa;
m_row.m_autocommit= transaction->m_autocommit;
m_row.m_savepoint_count= transaction->m_savepoint_count;
m_row.m_rollback_to_savepoint_count= transaction->m_rollback_to_savepoint_count;
m_row.m_release_savepoint_count= transaction->m_release_savepoint_count;
m_row_exists= true;
return;
}
/** Size of XID converted to null-terminated hex string prefixed with 0x. */
static const ulong XID_BUFFER_SIZE= XIDDATASIZE*2 + 2 + 1;
/**
Convert the XID to HEX string prefixed by '0x'
@param[out] buf output hex string buffer, null-terminated
@param buf_len size of buffer, must be at least @c XID_BUFFER_SIZE
@param xid XID structure
@param offset offset into XID.data[]
@param length number of bytes to process
@return number of bytes in hex string
*/
static uint xid_to_hex(char *buf, size_t buf_len, PSI_xid *xid, size_t offset, size_t length)
{
DBUG_ASSERT(buf_len >= XID_BUFFER_SIZE);
DBUG_ASSERT(offset + length <= XIDDATASIZE);
*buf++= '0';
*buf++= 'x';
return bin_to_hex_str(buf, buf_len-2, (char*)(xid->data + offset), length) + 2;
}
/**
Store the XID in printable format if possible, otherwise convert
to a string of hex digits.
@param field Record field
@param xid XID structure
@param offset offset into XID.data[]
@param length number of bytes to process
*/
static void xid_store(Field *field, PSI_xid *xid, size_t offset, size_t length)
{
DBUG_ASSERT(!xid->is_null());
if (xid_printable(xid, offset, length))
{
field->store(xid->data + offset, length, &my_charset_bin);
}
else
{
/*
xid_buf contains enough space for 0x followed by hex representation of
the binary XID data and one null termination character.
*/
char xid_buf[XID_BUFFER_SIZE];
size_t xid_str_len= xid_to_hex(xid_buf, sizeof(xid_buf), xid, offset, length);
field->store(xid_buf, xid_str_len, &my_charset_bin);
}
}
static void xid_store_bqual(Field *field, PSI_xid *xid)
{
xid_store(field, xid, xid->gtrid_length, xid->bqual_length);
}
static void xid_store_gtrid(Field *field, PSI_xid *xid)
{
xid_store(field, xid, 0, xid->gtrid_length);
}
int table_events_transactions_common::read_row_values(TABLE *table,
unsigned char *buf,
Field **fields,
bool read_all)
{
Field *f;
if (unlikely(! m_row_exists))
return HA_ERR_RECORD_DELETED;
/* Set the null bits */
DBUG_ASSERT(table->s->null_bytes == 3);
buf[0]= 0;
buf[1]= 0;
buf[2]= 0;
for (; (f= *fields) ; fields++)
{
if (read_all || bitmap_is_set(table->read_set, f->field_index))
{
switch(f->field_index)
{
case 0: /* THREAD_ID */
set_field_ulonglong(f, m_row.m_thread_internal_id);
break;
case 1: /* EVENT_ID */
set_field_ulonglong(f, m_row.m_event_id);
break;
case 2: /* END_EVENT_ID */
if (m_row.m_end_event_id > 0)
set_field_ulonglong(f, m_row.m_end_event_id - 1);
else
f->set_null();
break;
case 3: /* EVENT_NAME */
set_field_varchar_utf8(f, m_row.m_name, m_row.m_name_length);
break;
case 4: /* STATE */
set_field_enum(f, m_row.m_state);
break;
case 5: /* TRX_ID */
if (m_row.m_trxid != 0)
set_field_ulonglong(f, m_row.m_trxid);
else
f->set_null();
break;
case 6: /* GTID */
set_field_varchar_utf8(f, m_row.m_gtid, m_row.m_gtid_length);
break;
case 7: /* XID_FORMAT_ID */
if (!m_row.m_xa || m_row.m_xid.is_null())
f->set_null();
else
set_field_long(f, m_row.m_xid.formatID);
break;
case 8: /* XID_GTRID */
if (!m_row.m_xa || m_row.m_xid.is_null() || m_row.m_xid.gtrid_length <= 0)
f->set_null();
else
xid_store_gtrid(f, &m_row.m_xid);
break;
case 9: /* XID_BQUAL */
if (!m_row.m_xa || m_row.m_xid.is_null() || m_row.m_xid.bqual_length <= 0)
f->set_null();
else
xid_store_bqual(f, &m_row.m_xid);
break;
case 10: /* XA STATE */
if (!m_row.m_xa || m_row.m_xid.is_null())
f->set_null();
else
set_field_xa_state(f, m_row.m_xa_state);
break;
case 11: /* SOURCE */
set_field_varchar_utf8(f, m_row.m_source, m_row.m_source_length);
break;
case 12: /* TIMER_START */
if (m_row.m_timer_start != 0)
set_field_ulonglong(f, m_row.m_timer_start);
else
f->set_null();
break;
case 13: /* TIMER_END */
if (m_row.m_timer_end != 0)
set_field_ulonglong(f, m_row.m_timer_end);
else
f->set_null();
break;
case 14: /* TIMER_WAIT */
if (m_row.m_timer_wait != 0)
set_field_ulonglong(f, m_row.m_timer_wait);
else
f->set_null();
break;
case 15: /* ACCESS_MODE */
set_field_enum(f, m_row.m_read_only ? TRANS_MODE_READ_ONLY
: TRANS_MODE_READ_WRITE);
break;
case 16: /* ISOLATION_LEVEL */
set_field_isolation_level(f, m_row.m_isolation_level);
break;
case 17: /* AUTOCOMMIT */
set_field_enum(f, m_row.m_autocommit ? ENUM_YES : ENUM_NO);
break;
case 18: /* NUMBER_OF_SAVEPOINTS */
set_field_ulonglong(f, m_row.m_savepoint_count);
break;
case 19: /* NUMBER_OF_ROLLBACK_TO_SAVEPOINT */
set_field_ulonglong(f, m_row.m_rollback_to_savepoint_count);
break;
case 20: /* NUMBER_OF_RELEASE_SAVEPOINT */
set_field_ulonglong(f, m_row.m_release_savepoint_count);
break;
case 21: /* OBJECT_INSTANCE_BEGIN */
f->set_null();
break;
case 22: /* NESTING_EVENT_ID */
if (m_row.m_nesting_event_id != 0)
set_field_ulonglong(f, m_row.m_nesting_event_id);
else
f->set_null();
break;
case 23: /* NESTING_EVENT_TYPE */
if (m_row.m_nesting_event_id != 0)
set_field_enum(f, m_row.m_nesting_event_type);
else
f->set_null();
break;
default:
DBUG_ASSERT(false);
}
}
}
return 0;
}
PFS_engine_table* table_events_transactions_current::create(void)
{
return new table_events_transactions_current();
}
table_events_transactions_current::table_events_transactions_current()
: table_events_transactions_common(&m_share, &m_pos),
m_pos(0), m_next_pos(0)
{}
void table_events_transactions_current::reset_position(void)
{
m_pos.m_index= 0;
m_next_pos.m_index= 0;
}
int table_events_transactions_current::rnd_init(bool scan)
{
m_normalizer= time_normalizer::get(transaction_timer);
return 0;
}
int table_events_transactions_current::rnd_next(void)
{
PFS_thread *pfs_thread;
PFS_events_transactions *transaction;
bool has_more_thread= true;
for (m_pos.set_at(&m_next_pos);
has_more_thread;
m_pos.next())
{
pfs_thread= global_thread_container.get(m_pos.m_index, & has_more_thread);
if (pfs_thread != NULL)
{
transaction= &pfs_thread->m_transaction_current;
make_row(transaction);
m_next_pos.set_after(&m_pos);
return 0;
}
}
return HA_ERR_END_OF_FILE;
}
int table_events_transactions_current::rnd_pos(const void *pos)
{
PFS_thread *pfs_thread;
PFS_events_transactions *transaction;
set_position(pos);
pfs_thread= global_thread_container.get(m_pos.m_index);
if (pfs_thread != NULL)
{
transaction= &pfs_thread->m_transaction_current;
if (transaction->m_class != NULL)
{
make_row(transaction);
return 0;
}
}
return HA_ERR_RECORD_DELETED;
}
int table_events_transactions_current::delete_all_rows(void)
{
reset_events_transactions_current();
return 0;
}
ha_rows
table_events_transactions_current::get_row_count(void)
{
return global_thread_container.get_row_count();
}
PFS_engine_table* table_events_transactions_history::create(void)
{
return new table_events_transactions_history();
}
table_events_transactions_history::table_events_transactions_history()
: table_events_transactions_common(&m_share, &m_pos),
m_pos(), m_next_pos()
{}
void table_events_transactions_history::reset_position(void)
{
m_pos.reset();
m_next_pos.reset();
}
int table_events_transactions_history::rnd_init(bool scan)
{
m_normalizer= time_normalizer::get(transaction_timer);
return 0;
}
int table_events_transactions_history::rnd_next(void)
{
PFS_thread *pfs_thread;
PFS_events_transactions *transaction;
bool has_more_thread= true;
if (events_transactions_history_per_thread == 0)
return HA_ERR_END_OF_FILE;
for (m_pos.set_at(&m_next_pos);
has_more_thread;
m_pos.next_thread())
{
pfs_thread= global_thread_container.get(m_pos.m_index_1, & has_more_thread);
if (pfs_thread != NULL)
{
if (m_pos.m_index_2 >= events_transactions_history_per_thread)
{
/* This thread does not have more (full) history */
continue;
}
if ( ! pfs_thread->m_transactions_history_full &&
(m_pos.m_index_2 >= pfs_thread->m_transactions_history_index))
{
/* This thread does not have more (not full) history */
continue;
}
transaction= &pfs_thread->m_transactions_history[m_pos.m_index_2];
if (transaction->m_class != NULL)
{
make_row(transaction);
/* Next iteration, look for the next history in this thread */
m_next_pos.set_after(&m_pos);
return 0;
}
}
}
return HA_ERR_END_OF_FILE;
}
int table_events_transactions_history::rnd_pos(const void *pos)
{
PFS_thread *pfs_thread;
PFS_events_transactions *transaction;
DBUG_ASSERT(events_transactions_history_per_thread != 0);
set_position(pos);
DBUG_ASSERT(m_pos.m_index_2 < events_transactions_history_per_thread);
pfs_thread= global_thread_container.get(m_pos.m_index_1);
if (pfs_thread != NULL)
{
if ( ! pfs_thread->m_transactions_history_full &&
(m_pos.m_index_2 >= pfs_thread->m_transactions_history_index))
return HA_ERR_RECORD_DELETED;
transaction= &pfs_thread->m_transactions_history[m_pos.m_index_2];
if (transaction->m_class != NULL)
{
make_row(transaction);
return 0;
}
}
return HA_ERR_RECORD_DELETED;
}
int table_events_transactions_history::delete_all_rows(void)
{
reset_events_transactions_history();
return 0;
}
ha_rows
table_events_transactions_history::get_row_count(void)
{
return events_transactions_history_per_thread * global_thread_container.get_row_count();
}
PFS_engine_table* table_events_transactions_history_long::create(void)
{
return new table_events_transactions_history_long();
}
table_events_transactions_history_long::table_events_transactions_history_long()
: table_events_transactions_common(&m_share, &m_pos),
m_pos(0), m_next_pos(0)
{}
void table_events_transactions_history_long::reset_position(void)
{
m_pos.m_index= 0;
m_next_pos.m_index= 0;
}
int table_events_transactions_history_long::rnd_init(bool scan)
{
m_normalizer= time_normalizer::get(transaction_timer);
return 0;
}
int table_events_transactions_history_long::rnd_next(void)
{
PFS_events_transactions *transaction;
uint limit;
if (events_transactions_history_long_size == 0)
return HA_ERR_END_OF_FILE;
if (events_transactions_history_long_full)
limit= events_transactions_history_long_size;
else
limit= events_transactions_history_long_index.m_u32 % events_transactions_history_long_size;
for (m_pos.set_at(&m_next_pos); m_pos.m_index < limit; m_pos.next())
{
transaction= &events_transactions_history_long_array[m_pos.m_index];
if (transaction->m_class != NULL)
{
make_row(transaction);
/* Next iteration, look for the next entry */
m_next_pos.set_after(&m_pos);
return 0;
}
}
return HA_ERR_END_OF_FILE;
}
int table_events_transactions_history_long::rnd_pos(const void *pos)
{
PFS_events_transactions *transaction;
uint limit;
if (events_transactions_history_long_size == 0)
return HA_ERR_RECORD_DELETED;
set_position(pos);
if (events_transactions_history_long_full)
limit= events_transactions_history_long_size;
else
limit= events_transactions_history_long_index.m_u32 % events_transactions_history_long_size;
if (m_pos.m_index >= limit)
return HA_ERR_RECORD_DELETED;
transaction= &events_transactions_history_long_array[m_pos.m_index];
if (transaction->m_class == NULL)
return HA_ERR_RECORD_DELETED;
make_row(transaction);
return 0;
}
int table_events_transactions_history_long::delete_all_rows(void)
{
reset_events_transactions_history_long();
return 0;
}
ha_rows
table_events_transactions_history_long::get_row_count(void)
{
return events_transactions_history_long_size;
}
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